Budapest - public transport tickets?

Question

Tomorrow I will arrive to Budapest and have to go from Keleti to Somloi according to this instruction:

"At Keleti you have to take the metro (red) to Deák tér, then change to the other metro (blue) to Ferencziek tere (1 stop). There you have to take bus 8 or 112 and get off at Mészáros street. When you get off, go to the other side of the road by the traffic light and walk up on Avar utca. Then walk up some stairs and there is the building. Address: 1016. Budapest, Somlói út 51."

Could you please give me information as to what kind of ticket(s) and where I have to buy?

Answer 1

Hi,

I found that something,
SINGLE TICKET Einzelfahrkarte

HUF 230

Single ticket purchased on the vehicle (only on certain marked lines)/ Einzelfahrkarte gekauft bei Fahrer

HUF 260

Discount coupon book (10 Ps)/ 10 Stück Fahrkarte

HUF 2050

Discount coupon book (20 Ps)/ 20 Stück Fahrkarte

HUF 3900

Transfer ticket/ Transfer Fahrkarte

HUF 380

One-day travel card/ Tagesfahrkarte

HUF 1350

Three-day travel card/ Touristenkarte für 3 Tage

HUF 3100

Seven-day travel card/ Fahrkarte für 7 Tagen

HUF 3600

Suburban railway (HÉV) ticket (Outside Budapest it is distance-based)

Ref: http://www.budapesthotels.com/touristguide/Travelcards.asp

Regards